The bean curd, also called cowpea, is a vegetable that is produced in abundance in summer. It is a cultivar of the cowpea species that forms long pods, and is a twining annual herb. Alias bean horn, long horned bean, belt bean, skirt bean. Contains various vitamins and minerals. The young pods are fleshy and plump, crisp and tender for frying, and can also be blanched and cold or pickled. The pods are long and tubular, crunchy and soft, and there are two common types of white bean curd and green bean curd. In the purchase of bean curd, generally uniform thickness of bean strips, bright color, transparent and glossy, full of seeds for the best, and there are cracks, skin wrinkles, strips too thin without a child, the skin has a worm scar of bean curd should not be purchased. Nutritional composition of the bean is very good, is a vegetable in the meat.